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scratch test
noun
a test for a suspected allergy in which the skin is scratched and an allergen applied to the area, redness indicating a positive reaction.
scratch test
noun
med a skin test to determine allergic sensitivity to various substances by placing the allergen to be tested over an area of lightly scratched skin. A positive reaction is typically indicated by the formation of a weal
51Թ History and Origins
Origin of scratch test1
Example Sentences
For pieces of unknown purity, she performed a quick scratch test using an acid kit to help determine the metal’s karat composition.
“I went to see the allergist. Got the scratch test,” he reported.
An iodine-based scratch test or spectral analysis of leaves could indicate the presence of little cherry disease before it is exhibited in the fruit, Galimba said.
Wahlberg, 49, captioned the photo following an allergy scratch test while donning a mask at a doctor's office.
Dejneka nods, saying he had the same experience with that sample, and eagerly points to the exact spot on the counter where he did his scratch test last year.
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